MENU

/
/
Key points of welding quality of used welded pipe machine (3)

Key points of welding quality of used welded pipe machine (3)

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2022-12-08 11:30
  • Pvs:

【概要描述】There are many factors that affect the welding quality of used welded pipe machine, and these factors interact and restrict each other in the same system.

Key points of welding quality of used welded pipe machine (3)

【概要描述】There are many factors that affect the welding quality of used welded pipe machine, and these factors interact and restrict each other in the same system.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2022-12-08 11:30
  • Pvs:
Detail

There are many factors that affect the welding quality of used welded pipe machine, and these factors interact and restrict each other in the same system.

 

When one factor changes, other factors will also change as it changes. Therefore, in the high frequency adjustment, it is not enough to pay attention to the local adjustment of the frequency, power, current or squeeze amount of the used welded pipe machine.

 

This adjustment must be based on the specific conditions of the entire molding system, comprehensively considered from all aspects related to high-frequency welding, and adjusted by excluding all influencing factors one by one.

 

Below we decompose the main factors in the high-frequency welding process. There are the following eight aspects. We will introduce in detail the ⑤ Tube billet groove. ⑥Welding speed.

 

⑤ Tube billet groove

 

Used welded pipe machine

 

The groove of the tube blank is the cross-sectional shape. The general manufacturer directly enters the high-frequency welding material after the slitting, and the groove is in an "I" shape. When the thickness of the welding material is greater than 8-10mm, if this "I"-shaped groove is used, because of the curved arc, it is necessary to melt off the inner edge layer that the tube blank first contacts, thereby forming a very high inner edge. Burr, and it is easy to cause insufficient heating of the center layer and outer layer of the plate, which affects the welding strength of the high-frequency weld.

 

Therefore, when producing the back wall tube, the tube blank is best treated with edge planing or milling to make the groove in an "X" shape. Practice has proved that this kind of groove is very important for uniform heating and guaranteeing the quality of the weld.

 

At the same time, the choice of the groove shape also affects the adjustment of the meeting angle.

 

Welding joint design is a relatively weak link in welding engineering design, mainly because the knot groove design of many steel structural parts is not made by welding engineering and technical personnel, and grooves with rigid sets of standards and poor process performance are not uncommon. The groove form plays a very important role in controlling the internal quality of the weld and the manufacturing quality of the welded structure. The groove design must consider issues such as the fusion ratio of the base material, welding space, welding position and comprehensive economic benefits.

 

⑥ Welding speed

 

Used welded pipe machine

 

The forming speed of the welded pipe unit is restricted by the high-frequency welding speed and sawing speed. Generally speaking, the unit speed can be driven faster, reaching 100 meters per second, and the high-frequency can also increase the speed by increasing the power.

 

However, for steel plates over 10mm, the forming speed produced by domestic units can actually only reach 8-12 meters per second.

 

The welding speed affects the welding quality. When the welding speed is increased, it is beneficial to shorten the heat-affected zone and extrude oxide from the molten groove; on the contrary, when the welding speed is very low, the heat-affected zone becomes wider, which will produce larger welding burrs and thicken the oxide layer. The weld quality has deteriorated.

 

Therefore, it is necessary to fully understand the tube billet groove and welding speed will affect the welding quality of the used welded pipe machine, then it is necessary to analyze the other aspects of the welding quality of the used welded pipe machine in order to summarize the method and deal with it. The next issue will introduce ⑦impedance device in detail. ⑧Welding extrusion force. If necessary, you can continue to pay attention to us.

关键词:

More News

Analyzing the roll life of a used ERW tube mill
Analyzing the roll life of a used ERW tube mill
In the production of used ERW tube mills, the roll is the key and important special tool. Roll consumption is also a key tool for manipulating product costs. In addition, the normal operation of the roll will directly affect the output and quality of welded pipe manufacturing. Therefore, welded pipe manufacturers attach great importance to and strive to improve the service life of the roll.
Detail
In the production of used ERW tube mills, the roll is the key and important special tool. Roll consumption is also a key tool for manipulating product costs. In addition, the normal operation of the roll will directly affect the output and quality of welded pipe manufacturing. Therefore, welded pipe manufacturers attach great importance to and strive to improve the service life of the roll.
How to extend the service life of high frequency welded pipe equipment
How to extend the service life of high frequency welded pipe equipment
The service life of high frequency welded pipe equipment is of concern to everyone. The contribution made in the welding industry is immeasurable, and the care of it by customers should be paid more attention. So how can the service life of high frequency welded pipe equipment be extended in the actual production process?
Detail
The service life of high frequency welded pipe equipment is of concern to everyone. The contribution made in the welding industry is immeasurable, and the care of it by customers should be paid more attention. So how can the service life of high frequency welded pipe equipment be extended in the actual production process?
Adjusting the welding seam position of square and rectangular pipes made by directly forming to square pipe mill (2)
Adjusting the welding seam position of square and rectangular pipes made by directly forming to square pipe mill (2)
Judging that the quality of the square tube produced by the directly forming to square pipe mill meets the standard is based on a large number of inspection data of the microhardness of the weld and the microhardness of the base material. The former is much higher than the latter. It is for this reason that the weld is usually not placed at a positive angle, but placed within t~(t+5mm) from the corner edge to reduce the risk of weld cracks. This requires effective control of the weld position. Control methods include forming roll method, guide roll method and sizing roll method.
Detail
Judging that the quality of the square tube produced by the directly forming to square pipe mill meets the standard is based on a large number of inspection data of the microhardness of the weld and the microhardness of the base material. The former is much higher than the latter. It is for this reason that the weld is usually not placed at a positive angle, but placed within t~(t+5mm) from the corner edge to reduce the risk of weld cracks. This requires effective control of the weld position. Control methods include forming roll method, guide roll method and sizing roll method.
Welding and rolling bottom line and sizing rolling bottom line in high frequency welded pipe machine
Welding and rolling bottom line and sizing rolling bottom line in high frequency welded pipe machine
The rolling line of high frequency welded pipe machine is all rolls on the welded pipe unit, including leveling rolls, forming flat rolls, guide rolls, squeeze rolls, deburring idlers, calendering rolls, sizing rolls, straightening rolls and other rolls. It is also the reference line for the installation and adjustment of related auxiliary equipment such as uncoilers, spiral loopers, flying saws, conveyor rollers, etc. It is the general term for the rolling bottom line and rolling center line, just like the human body. The spine plays a pivotal role in all process parameters of welded pipe production.
Detail
The rolling line of high frequency welded pipe machine is all rolls on the welded pipe unit, including leveling rolls, forming flat rolls, guide rolls, squeeze rolls, deburring idlers, calendering rolls, sizing rolls, straightening rolls and other rolls. It is also the reference line for the installation and adjustment of related auxiliary equipment such as uncoilers, spiral loopers, flying saws, conveyor rollers, etc. It is the general term for the rolling bottom line and rolling center line, just like the human body. The spine plays a pivotal role in all process parameters of welded pipe production.
Contact information
Tel: +86-13392281699
Wechat: 13392281699
Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province

Recommendation

Online Inquiry

留言应用名称:
底部留言
描述:

LINK

Contact Us

Tel (wechat): 13336487288
Wechat:+86 13336487288

WhatsApp:+86 13336487288
Email: zty@usedpipemill.com

Address: No. A99, Lecong Avenue East, Lecong Town, Foshan City, Guangdong Province

QRCODE

Copyright 0 2021 jinyujie. 粤ICP备13051810号 Powerby:  300.cn